US998156A - Blue vat dye. - Google Patents

Blue vat dye. Download PDF

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Publication number
US998156A
US998156A US62042511A US1911620425A US998156A US 998156 A US998156 A US 998156A US 62042511 A US62042511 A US 62042511A US 1911620425 A US1911620425 A US 1911620425A US 998156 A US998156 A US 998156A
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US
United States
Prior art keywords
vat dye
blue
blue vat
parts
dye
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US62042511A
Inventor
Max Buff
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Farbenfabriken Vorm Friedr Bayer and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Farbenfabriken Vorm Friedr Bayer and Co filed Critical Farbenfabriken Vorm Friedr Bayer and Co
Priority to US62042511A priority Critical patent/US998156A/en
Application granted granted Critical
Publication of US998156A publication Critical patent/US998156A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
    • C07D209/04—Indoles; Hydrogenated indoles
    • C07D209/30—Indoles; Hydrogenated indoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to carbon atoms of the hetero ring
    • C07D209/32—Oxygen atoms
    • C07D209/38—Oxygen atoms in positions 2 and 3, e.g. isatin

Definitions

  • co I R meaning a hydrocarbon radical, which are after being dried and pulverized dark powders yielding vats with caustic soda lye and hydrosulfite which dye cotton blue fast shades, substantially as described.

Description

UNITED STATES PATENT OFFICE.
MAX B Frfor VOI-IWINKEL,
FABRIKEN VORM. 'FRIEDR. TION or GERMANY.
NEAR ELBERFELD, GERMANY, ASSIGNOR TO FARBEN- BAYER & 00., OF ELBERFELD, GERMANY, A CORPORA- BLUE VAT DYE.
No Drawing.
' ized dark powders yielding with caustic 'in 150 parts of .nitrobenzene.
soda lye and ton fast blue.
The process probably proceeds ance with the following equation hydro-sulfite vats dyeing cotin accordoo (R meaning a hydrocarbon radical).
In order to illustrate the new process more fully the following. example is given, the parts being by weight-31.6 parts of lmethylamino 4 bromoanthraquinone are suspended together with 14.7 parts of isatin This n1ixture is then heated to boiling While being s irred for 10 hours with the addition of 20 parts of sodium acetate and 5 parts of cuprous chlorid. After the solution has cooled the crystalline condensation product is removed by .filtration and washed with alcohol and water. It is a dark blue powder which is rather diflicultly soluble in most organic solvents. Concentrated sulfuric I Specification of Letters Patent. Application filed April 11, 1911.
Patented July 18, 1911. Serial No. 620,425. 0
acid dissolves it with a brown color. lVith hydro-sulfite and NaOH the new product yields a brown vat from which cotton is dyed a greenish-blue shade, fast to light.
claims- 1. The herein described new dyestuffs having probably the following general formula:
NHR
co I R meaning a hydrocarbon radical, which are after being dried and pulverized dark powders yielding vats with caustic soda lye and hydrosulfite which dye cotton blue fast shades, substantially as described.
2. The herein described new dyestuif having probably the formula:
NELCHa witnesses.
MAXBUFF. [L. s.]
Witnesses v ALFRED HENKEL, N. SIRCKE.
US62042511A 1911-04-11 1911-04-11 Blue vat dye. Expired - Lifetime US998156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US62042511A US998156A (en) 1911-04-11 1911-04-11 Blue vat dye.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62042511A US998156A (en) 1911-04-11 1911-04-11 Blue vat dye.

Publications (1)

Publication Number Publication Date
US998156A true US998156A (en) 1911-07-18

Family

ID=3066486

Family Applications (1)

Application Number Title Priority Date Filing Date
US62042511A Expired - Lifetime US998156A (en) 1911-04-11 1911-04-11 Blue vat dye.

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US (1) US998156A (en)

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